PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

34146Waveguide Assembly

Frontgrade Technologies Inc. · NSN 5985-00-518-4901 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-518-4901 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-518-4901. Primary manufacturer part number: 34146.
Features
  • Waveguide Assembly — FSC 5985
  • Style Designator: STRAIGHT TYPE
  • Surface Treatment: SILVER ALL FLANGE INSIDE SURFACES
  • Flange Quantity: 2
  • Precious Material: SILVER
  • Waveguide Length: 3.000 FEET NOMINAL FT
  • Precious Material and Location: FLANGE SURFACE SILVER
  • 2 verified cross-references
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Waveguide Assembly, cataloged under National Stock Number 5985-00-518-4901, is classified within Federal Supply Class 5985 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Frontgrade Technologies Inc.. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-518-4901
Primary Part Number34146
Item NameWaveguide Assembly
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerFrontgrade Technologies Inc.
StatusACTIVE
Style DesignatorSTRAIGHT TYPE
Surface TreatmentSILVER ALL FLANGE INSIDE SURFACES
Flange Quantity2
Precious MaterialSILVER
Waveguide Length3.000 FEET NOMINAL FT
Precious Material and LocationFLANGE SURFACE SILVER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5940-00-815-48282753 INTERCHANGEABLE
Terminal,lug
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5961-00-988-76301850-0062-1 INTERCHANGEABLE
Transistor
Keysight Technologies Inc
4820-01-178-061734146 INTERCHANGEABLE
Cap,valve
Hoffman/new Yorker Inc
Cross-Reference Index
Part NumberManufacturer
34146 Litton Systems Inc Airtron Div (USA)
34146 PRIMARY Frontgrade Technologies Inc. (USA)
Related Parts
5940-00-815-4828INTERCHANGEABLE
TERMINAL,LUG
2753
5961-00-988-7630INTERCHANGEABLE
TRANSISTOR
1850-0062-1
4820-01-178-0617INTERCHANGEABLE
CAP,VALVE
34146

Frequently Asked Questions

What is NSN 5985-00-518-4901?

NSN 5985-00-518-4901 is a Waveguide Assembly, manufactured by Frontgrade Technologies Inc., classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-518-4901?

NSN 5985-00-518-4901 has 2 cross-referenced part numbers: 34146 (Litton Systems Inc Airtron Div), 34146 (Frontgrade Technologies Inc.).

What NSN replaces 5985-00-518-4901?

There are 3 known substitutes for 5985-00-518-4901: 5940-00-815-4828, 5961-00-988-7630, 4820-01-178-0617. Verify interchangeability with system specifications before substitution.

What are the specifications of 34146?

Key specifications for 34146: Style Designator: STRAIGHT TYPE; Surface Treatment: SILVER ALL FLANGE INSIDE SURFACES; Flange Quantity: 2; Precious Material: SILVER. 6 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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